<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
            <template slot-scope="scope">
                <el-row  :class="['bdbottom', i1 ===0 ? 'bdtop' : 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
                    <!-- 渲染一级权限 -->
                    <el-col :span="5">
                       <el-tag closable @close="removeRightById(scope.row, item1.id)">  {{item1.authName}} </el-tag>
                       <i class="el-icon-caret-right"></i>
                    </el-col>
                    <!-- 渲染二级和三级权限 -->
                    <el-col :span="19">
                      <!-- 通过 for 循坏 嵌套渲染二级权限 -->
                      <el-row :class="[i2 ==0 ? '' : 'bdtop','vcenter']" v-for="(item2, i2 ) in item1.children" :key="item2.id">
                          <el-col :span="6">
                              <el-tag closable @close="removeRightById(scope.row, item2.id)" type="success">{{item2.authName}}</el-tag>
                               <i class="el-icon-caret-right"></i>
                          </el-col>
                          <el-col :span="18">
                              <el-tag @close="removeRightById(scope.row, item3.id)" closable type="warning" v-for="(item3) in item2.children" :key="item3.id">
                                  {{item3.authName}}
                              </el-tag>
                          </el-col>
                      </el-row>
                    </el-col>
                </el-row>
                <pre>
                    <!-- {{scope.row}} -->
                </pre>
            </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button
              @click="showEditDialog(scope.row.id)"
              type="primary"
              icon="el-icon-edit"
              >编辑</el-button
            >
            <el-button
              @click="removeUserById(scope.row.id)"
              type="danger"
              icon="el-icon-delete"
              >删除</el-button
            >
            <el-button @click="showSetRigtDialog(scope.row)" type="warning" icon="el-icon-setting"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      @close="addDialogClosed"
      title="添加角色"
      :visible.sync="addDialogVisible"
      width="50%"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="80px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 添加用户修改信息 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="editDalogVisible"
      width="50%"
      @close="editDalogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="80px"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDalogVisible = false">取 消</el-button>
        <el-button type="primary" @click="sditUserInfo">确 定</el-button>
      </span>
    </el-dialog>
   <!-- 分配权限的对话框 -->
    <el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%"
  @close="setRightDialClosed">
  <!-- 树形控件 -->
  <el-tree ref="treeRef" :default-checked-keys="defKeys" :data="rightslist" :props="treeProps" show-checkbox node-key="id" default-expand-all></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
    // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        roleDesc: '',
        roleName: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' }
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' }
        ]
      },
      // 所有角色列表数据
      rolelist: [],
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      // 所有权限数据
      rightslist: [],
      // 树形控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      // 默认选中的节点id值数组
      defKeys: [],
      // 当前即将分配权限的角色id
      roleIds: '',
      // 控制修改用户对话框的显示与隐藏
      editDalogVisible: false,
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        name: [{ required: true, message: '请输入角色名称', trigger: 'blur' }],
        region: [
          { required: true, message: '请输入角色描述', trigger: 'blur' }
        ]
      },
      roleId: 0
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    // 添加新用户 点击按钮
    addUser() {
      this.$refs.addFormRef.validate(async (valid) => {
        // eslint-disable-next-line no-useless-return
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }

        this.$message.success('添加用户成功~')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取列表数据
      })
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('roles/' + id)
      console.log(id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！嘻嘻')
      }
      this.editForm = res.data
      this.editDalogVisible = true
    },
    // 获取所有的角色列表
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色信息列表失败')
      }
      this.rolelist = res.data
      console.log(this.rolelist)
    },
    // 根据id删除对应的权限
    async removeRightById(role, rightId) {
    // 弹框提示用户是否要删除
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败')
      }
      // 不建议调用
      // this.getRolesList()
      role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRigtDialog(role) {
      this.roleId = role.id
      // 获取所有权限数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败！')
      }
      // 把获取到的权限数据保存到 data 中
      this.rightslist = res.data
      console.log(this.rightslist)

      // 帝国获取三级节点的id
      this.getleafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    // 通过递归的形式，获取角色下所有三级权限的id 并保存到 defkeys 数组中
    getleafKeys(node, arr) {
      // 如果当前 node 节点不包含 children 属性 则是三级节点
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item =>
        this.getleafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭事件
    setRightDialClosed() {
      this.defKeys = []
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightDialogVisible = false
    },
    sditUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          'roles/' + this.editForm.roleId,
          {
            roleName: this.editForm.roleName,
            roleDesc: this.editForm.roleDesc
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('更新用户名称失败！嘻嘻')
        }

        // 关闭对话框
        this.editDalogVisible = false
        // 刷新数据列表
        this.getRolesList()
        // 提示修改成功
        this.$message.success('更新用户名称成功！嘻嘻')
        this.getRolesList()
      })
    },
    // 根据id删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户信息, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((err) => err)

      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除， 则返回值为字符串 cancel
      console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('roles/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('删除用户信息失败！')
      }
      this.$message.success('删除用户信息成功')
      this.getRolesList()
    },
    editDalogClosed() {
      this.$refs.editFormRef.resetFields()
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
    margin: 7px;
}
.bdtop {
border-top: 1px solid #eee;
}
.bdbottom {
border-bottom: 1px solid #eee;
}

.vcenter {
    display: flex;
    align-items: center;
}
</style>
